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TAB 17 <br />• <br /> TABLE OF CONTENTS <br /> Paste <br /> Ground Water 1 <br /> Introduction 1 <br /> Ground Water Inflows to Pits and Drawdowns 1 <br /> Introduction 7 <br /> McWhorter Analysis for Calculating Pit Inflows 1 <br /> Drawdown from Pit Pumpage and Extent of Water Level Declines 9 <br /> Potential Mining Impacts on Local Water Rights 11 <br /> Removal of Wells and Ponds by Mining 13 <br /> Pit Pumpage Drawdown Effects on Adjacent Water Users 13 <br /> Production Well Impacts on Adjacent Water Users 14 <br /> Impact of Replaced Spoil Material on Ground Water Flow and <br /> Recharge Capacity 15 <br /> Containment of Pit Inflow Pumpage and Impacts on Water Quality 16 <br /> Impact of Spoil Water Quality on the Ground and Surface Water <br />• Quality 17 <br /> Overburden Characterization 18 <br /> Controls on Spoil and Downgradient Water Quality 28 <br /> Water Chemistry and Flow Inferences Based on Seneca II <br /> Monitoring Results 31 <br /> Potential Impacts of Replaced Spoil on Ground Water Quality 39 <br /> Overburden and Wadge Coal Aquifers 41 <br /> Alluvial Aquifers 44 <br /> Potential Impact of Replaced Spoil on Surface Water Quality 49 <br /> Surface Water 54 <br /> Etfects of Mining on the Local Geomorphology 54 <br /> Drainage Basins 54 <br /> Stream Channels 56 <br /> Effects of Sediment Ponds on Channel Characteristics and <br /> Downstream Users 58 <br /> Effects of Sediment Pond Discharges, Diversions and Culverts at <br /> Road Crossings on Surface Water Quality 61 <br />• Effects of Runoff from Reclaimed Areas on the Quantity of Streamflow 62 <br />i Revised 9/98 <br />